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问题 为什么用 by September 30

—When do we need to pay the balance?—______ September 30.A. In            B. By          C. During        D. Within答案是B。为什么用 by September 30？

问题 keep sth done的疑问

He tried to keep his head turned decently away.曹老师您好，这里请教您一下，turn away（转头）应改是个短暂动词，这里为什么能和keep连用? 短暂性终止动词在状态改变后难道可以和延续动词一样表示状态吗? 比如 close，在keep window closed中...

问题 用英语说“儿童公园”可以省略所有格形式吗

Last Sunday my family went to ________.A.the child's parkB.the children' parkC.the children's parkD.the childrens' park

问题 怎么判断介词后面是动名词复合结构还是介宾结构

Like virtual schools operating in other states, Florid Virtual allows faculty to provide personal courses.请问怎么判断operating..是分词定语还是动名词复合结构？

问题 do everything one can do的省略规则

He did everything he could (do) to help us.请问这句话是否可以理解为省略了括号中的部分呢？如果可以的话，省略的规则是什么呢？

问题 outside of school的词性理解与语法分析

What do you do to relax outside of school?这是2019版人教版高中英语新教材必修一的 Unit 1（p11）上的句子。outside 本身不是介词吗？为什么还要加介词 of？

问题 traffic和trafficking作为名词的区别

...具体区别吗？词典例句是这样的：...the widespread traffic in stolen cultural artefacts.He was sentenced to ten years in prison on charges of drug trafficking.请问这两句中的traffic和trafficking可以互换使用吗？为什么？

问题 stand in a/the circle的问题

The children stood in ______ circle and danced to music. A. a      B. an        C. the      D. 不填请问为什么不能选C，就说站在这个圈里?

问题 every time that 与 every time when

We went to see her every time that we had a chance.请问这里为什么用 every time that，而不用 every time when？

问题 but连接动名词

The remaining 9.1% believe that Confucianism should be revived but not discarding Western culture.老师这句话中的remaining不应该是remained吗？but not discarding是什么用法，but应该连接句子啊？

问题 介词后接动名词

语法上说介词后面可以接动名词作宾语.They agree on sth.   Be worried about sb/sth.为何这两句话中的介词后面没见过接doing呢？

问题 间接感叹句

Yet some experts don’t expect a children’s vaccine will be ready by the 2021 school year because of how long trials take, even on the accelerated timeline for Covid-19 vaccines. 黑体字是间接感叹句，还是，名词性关系分句？

问题 可以说do preparations for sth（为某事做准备）吗

...are making preparations for the journey. 我们在为旅行作准备。She is making preparations for her marriage. 她正在为结婚做准备。The country is making preparations for war. 该国正进行备战。The students made their final preparations for the test. 学生们为考试做了最...

问题 the greatest and best known后接不接名词分别是什么词组

One of the greatest and best known of his essays is Nature.这里的 the greatest and best known 是不是名词词组？One of the greatest and best known essays is Nature.这里的 the greatest and best known 是不是形容词词组？

问题 这个句子该怎么划分句子结构和成分？

...;the prejudices of the public, but what is much more unconquerable, the private interests of many individuals, irresistibly oppose free trade.这个句子成分该怎么划分结构和成分？我的...